{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:KHJDVZVNAHV3CUNZ2QP5YVMXEN","short_pith_number":"pith:KHJDVZVN","canonical_record":{"source":{"id":"2302.08812","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2023-02-17T11:12:01Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"425450ecc786aee99de842f45058d93c5624231d6500a998172a61e710c07159","abstract_canon_sha256":"fecd8b59bf7c268508390a3d76c671293cf0d3af0573fccecf49c10119981f40"},"schema_version":"1.0"},"canonical_sha256":"51d23ae6ad01ebb151b9d41fdc5597234a68fddf2c88593e3b6dbbb2c75d6c6e","source":{"kind":"arxiv","id":"2302.08812","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.08812","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"arxiv_version","alias_value":"2302.08812v2","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.08812","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"pith_short_12","alias_value":"KHJDVZVNAHV3","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"pith_short_16","alias_value":"KHJDVZVNAHV3CUNZ","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"pith_short_8","alias_value":"KHJDVZVN","created_at":"2026-07-05T08:59:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:KHJDVZVNAHV3CUNZ2QP5YVMXEN","target":"record","payload":{"canonical_record":{"source":{"id":"2302.08812","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2023-02-17T11:12:01Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"425450ecc786aee99de842f45058d93c5624231d6500a998172a61e710c07159","abstract_canon_sha256":"fecd8b59bf7c268508390a3d76c671293cf0d3af0573fccecf49c10119981f40"},"schema_version":"1.0"},"canonical_sha256":"51d23ae6ad01ebb151b9d41fdc5597234a68fddf2c88593e3b6dbbb2c75d6c6e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:59:02.352504Z","signature_b64":"Fra/RtL1SIQbTkMWOQBiIk/VbdwM3bvcDwkFkvko0DzJTm6ehEBksWBnaAo9VjPFa3mVUWwdDzIgcsXZpB+tDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"51d23ae6ad01ebb151b9d41fdc5597234a68fddf2c88593e3b6dbbb2c75d6c6e","last_reissued_at":"2026-07-05T08:59:02.352026Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:59:02.352026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2302.08812","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:59:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SqrlSUu29Roeqnv/HuCNPFQ5qpZTVLnb6lk1YZDUDn2aBf2GZJK4pZnHVBov7f7go5J9EIh8FQyVOmRBlAiICg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:16:56.224071Z"},"content_sha256":"8cac6dd71ad041fa3ec3873a9dbd722fc9e970f70f1b639b6427f0f4d34681d6","schema_version":"1.0","event_id":"sha256:8cac6dd71ad041fa3ec3873a9dbd722fc9e970f70f1b639b6427f0f4d34681d6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:KHJDVZVNAHV3CUNZ2QP5YVMXEN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low Energy States and CPT invariance at the Big Bang","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Jos\\'e Navarro-Salas, Sergi Nadal-Gisbert, Silvia Pla","submitted_at":"2023-02-17T11:12:01Z","abstract_excerpt":"In this paper, we analyze the quantum vacuum in a radiation-dominated and CPT-invariant universe by further imposing the quantum states to be ultraviolet regular i.e., satisfying the Hadamard/adiabatic condition. For scalar fields, this is enforced by constructing the vacuum via the States of Low Energy proposal. For spin-$\\frac{1}{2}$ fields, we extend this proposal for a FLRW spacetime and apply it for the radiation-dominated and CPT-invariant universe. We focus on minimizing the smeared energy density around the Big Bang and give strong evidence that the resulting states satisfy the Hadamar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.08812","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2302.08812/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T08:59:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CFl6pi6sucKK6E0iKOPemt1BULjArj6OR7iZdD2w/Na/87ruhhcypRGAHhuMTp99Wt/I82X9l8MKeyPrAJ0pCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T11:16:56.226228Z"},"content_sha256":"c6a4bc312f401b54c78acd2203d6e4830e7ef799534577772cfa47462254bf64","schema_version":"1.0","event_id":"sha256:c6a4bc312f401b54c78acd2203d6e4830e7ef799534577772cfa47462254bf64"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN/bundle.json","state_url":"https://pith.science/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T11:16:56Z","links":{"resolver":"https://pith.science/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN","bundle":"https://pith.science/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN/bundle.json","state":"https://pith.science/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KHJDVZVNAHV3CUNZ2QP5YVMXEN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:KHJDVZVNAHV3CUNZ2QP5YVMXEN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"fecd8b59bf7c268508390a3d76c671293cf0d3af0573fccecf49c10119981f40","cross_cats_sorted":["hep-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2023-02-17T11:12:01Z","title_canon_sha256":"425450ecc786aee99de842f45058d93c5624231d6500a998172a61e710c07159"},"schema_version":"1.0","source":{"id":"2302.08812","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.08812","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"arxiv_version","alias_value":"2302.08812v2","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.08812","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"pith_short_12","alias_value":"KHJDVZVNAHV3","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"pith_short_16","alias_value":"KHJDVZVNAHV3CUNZ","created_at":"2026-07-05T08:59:02Z"},{"alias_kind":"pith_short_8","alias_value":"KHJDVZVN","created_at":"2026-07-05T08:59:02Z"}],"graph_snapshots":[{"event_id":"sha256:c6a4bc312f401b54c78acd2203d6e4830e7ef799534577772cfa47462254bf64","target":"graph","created_at":"2026-07-05T08:59:02Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2302.08812/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we analyze the quantum vacuum in a radiation-dominated and CPT-invariant universe by further imposing the quantum states to be ultraviolet regular i.e., satisfying the Hadamard/adiabatic condition. For scalar fields, this is enforced by constructing the vacuum via the States of Low Energy proposal. For spin-$\\frac{1}{2}$ fields, we extend this proposal for a FLRW spacetime and apply it for the radiation-dominated and CPT-invariant universe. We focus on minimizing the smeared energy density around the Big Bang and give strong evidence that the resulting states satisfy the Hadamar","authors_text":"Jos\\'e Navarro-Salas, Sergi Nadal-Gisbert, Silvia Pla","cross_cats":["hep-th"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2023-02-17T11:12:01Z","title":"Low Energy States and CPT invariance at the Big Bang"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.08812","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:8cac6dd71ad041fa3ec3873a9dbd722fc9e970f70f1b639b6427f0f4d34681d6","target":"record","created_at":"2026-07-05T08:59:02Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"fecd8b59bf7c268508390a3d76c671293cf0d3af0573fccecf49c10119981f40","cross_cats_sorted":["hep-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"gr-qc","submitted_at":"2023-02-17T11:12:01Z","title_canon_sha256":"425450ecc786aee99de842f45058d93c5624231d6500a998172a61e710c07159"},"schema_version":"1.0","source":{"id":"2302.08812","kind":"arxiv","version":2}},"canonical_sha256":"51d23ae6ad01ebb151b9d41fdc5597234a68fddf2c88593e3b6dbbb2c75d6c6e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"51d23ae6ad01ebb151b9d41fdc5597234a68fddf2c88593e3b6dbbb2c75d6c6e","first_computed_at":"2026-07-05T08:59:02.352026Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:59:02.352026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fra/RtL1SIQbTkMWOQBiIk/VbdwM3bvcDwkFkvko0DzJTm6ehEBksWBnaAo9VjPFa3mVUWwdDzIgcsXZpB+tDg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:59:02.352504Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.08812","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8cac6dd71ad041fa3ec3873a9dbd722fc9e970f70f1b639b6427f0f4d34681d6","sha256:c6a4bc312f401b54c78acd2203d6e4830e7ef799534577772cfa47462254bf64"],"state_sha256":"0e5701ffcd1f406daa6370bd4c19e0bc0f568e0876967df43c55989e405dbe94"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pSDc4fhgvJZLW8qj7FXmlM3BYdBMVrvWv/WnloG2WlV2bjDf/o3TBL+KzAkSPKnVOb2pYTVX89/ax+sEDXOJCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T11:16:56.239925Z","bundle_sha256":"6a7ef6ff14556ced81aaded73bc0d001f3754d589817be3543c8533bdf92315e"}}